Strategic Action Plan - International Environmental Technology Centre

Strategic Action Plan Report
Processing method
The method involves controlled conversion of city garbage (MSW) into organic fertilizer through two stages -
1) a biological process for decomposition of MSW and
2) a mechanical process for screening the decomposed organic matter.
The garbage received is arranged in heaps of, five cu.m., sprinkled with specially prepared mixture of bioenzyme
and herbal extracts. The garbage becomes odor free within couple of hours after spraying and
encourages multiplication of the desirable aerobic bacteria, which helps in speedy decomposition of organic
waste. Then the waste is stacked in 50 to 100 m long windrows of about 5 m width and 2 m height. Due to
exothermic reaction, the temperature inside the heap reaches 70 to 75 o c within 48 hours. The heat generated
kills the pathogens and ensures accelerated decomposition. Measuring inside temperature of heap and
moisture content monitors the progress of the composting. About 50 to 60 % moisture content is maintained
by spraying water. Turning the windrows once in week does the aeration. A typical aerobic composting plant
can be seen in Figure 5.3.
Figure 5.3: Typical Aerobic Compost Plant
ISWM Plan for Pune 91